cvs of now. Happens quite often, always when clicking on one of the tabs (these things are _handy_). Note: I intensively use frames and gnuclient. OG. #0 0x81a2ef7 in print_internal (obj=141458748, printcharfun=1079560632, escapeflag=1) at /mnt/work/xemacs/xemacs-wk/src/print.c:1320 1320 if (LHEADER_IMPLEMENTATION (lheader)->printer) (gdb) where #0 0x81a2ef7 in print_internal (obj=141458748, printcharfun=1079560632, escapeflag=1) at /mnt/work/xemacs/xemacs-wk/src/print.c:1320 #1 0x81a2675 in print_cons (obj=142416420, printcharfun=1079560632, escapeflag=1) at /mnt/work/xemacs/xemacs-wk/src/print.c:1056 #2 0x81a2f26 in print_internal (obj=142410756, printcharfun=1079560632, escapeflag=1) at /mnt/work/xemacs/xemacs-wk/src/print.c:1321 #3 0x81a1336 in Fprin1 (object=142410756, stream=1079560632) at /mnt/work/xemacs/xemacs-wk/src/print.c:616 #4 0x80cd35a in Fbacktrace (stream=1079560632, detailed=1079598984) at /mnt/work/xemacs/xemacs-wk/src/eval.c:4901 #5 0x80bffb8 in fatal_error_signal (sig=11) at /mnt/work/xemacs/xemacs-wk/src/emacs.c:276 #6 <signal handler called> #7 0x4006d800 in _XmBuildExtResources () #8 0x81a19a6 in print_error_message (error_object=142410756, stream=139189968) at /mnt/work/xemacs/xemacs-wk/src/print.c:766 #9 0x81a1b4c in Fdisplay_error (error_object=142410756, stream=1079598984) at /mnt/work/xemacs/xemacs-wk/src/print.c:821 #10 0x80c9b87 in Ffuncall (nargs=3, args=0xbffff444) at /mnt/work/xemacs/xemacs-wk/src/eval.c:3218 #11 0x8096338 in execute_optimized_program ( program=0x8740090 "ÀÁ\n¢\e\034\035Á\026\006À\026\aÀ\026\bÁ\026\t\016\n«\004Ë \210Ì \210\n\026\rÎÁ!\210ÏÁ\013Ða«\037Ñ\nA＠!«\025Ò\nA＠GU¬\rÓ\nA＠ÒH!«\004Ôª\035Õª\032\013Öa«\004Öª\022\013×s«\004ت\n\013Ùa«\004Úª\002Û\"\210Ü\nÀ\"\210Ý «\013ÎÞ\016\037\"\210àá!\210+À\207i\bY", stack_depth=5, constants_data=0x4062c7dc) at /mnt/work/xemacs/xemacs-wk/src/bytecode.c:747 #12 0x8095e01 in funcall_compiled_function (fun=1080431840, nargs=1, args=0xbffff5b8) at /mnt/work/xemacs/xemacs-wk/src/bytecode.c:516 #13 0x80c9e36 in Ffuncall (nargs=2, args=0xbffff5b4) at /mnt/work/xemacs/xemacs-wk/src/eval.c:3253 #14 0x80cb03e in call1 (fn=1079424432, arg0=142410756) at /mnt/work/xemacs/xemacs-wk/src/eval.c:3867 #15 0x80a434b in cmd_error (data=142410756, dummy=1079599632) at /mnt/work/xemacs/xemacs-wk/src/cmdloop.c:191 #16 0x80c63c0 in condition_case_1 (handlers=1079599440, bfun=0x80a4ad8 <command_loop_1>, barg=1079599632, hfun=0x80a4304 <cmd_error>, harg=1079599632) at /mnt/work/xemacs/xemacs-wk/src/eval.c:1627 #17 0x80a442b in command_loop_3 () at /mnt/work/xemacs/xemacs-wk/src/cmdloop.c:252 #18 0x80a4453 in command_loop_2 (dummy=1079599632) at /mnt/work/xemacs/xemacs-wk/src/cmdloop.c:263 #19 0x80c5f92 in internal_catch (tag=1079414472, func=0x80a4448 <command_loop_2>, arg=1079599632, threw=0x0) at /mnt/work/xemacs/xemacs-wk/src/eval.c:1310 #20 0x80a4688 in initial_command_loop (load_me=1079599632) at /mnt/work/xemacs/xemacs-wk/src/cmdloop.c:301 #21 0x80c14cc in xemacs_21_2_b31_i686_pc_linux (argc=1, argv=0xbffff944, envp=0xbffff94c, restart=0) at /mnt/work/xemacs/xemacs-wk/src/emacs.c:1872 #22 0x80c20d8 in main (argc=1, argv=0xbffff944, envp=0xbffff94c) at /mnt/work/xemacs/xemacs-wk/src/emacs.c:2229 #23 0x403fccb3 in __libc_start_main (main=0x80c2058 <main>, argc=1, argv=0xbffff944, init=0x8080518 <_init>, fini=0x8243a3c <_fini>, rtld_fini=0x4000a350 <_dl_fini>, stack_end=0xbffff93c) at ../sysdeps/generic/libc-start.c:78 Lisp backtrace follows: # bind (print-message-label) display-error((error "illegal callback" Fatal error (11).